Abstract:In order to understand the corrosion influencing factors and the mechanism of each influencing factor of anchorage structures in underground engineering and improve the durability and long-term stability of permanent support structures in underground space, the research progress and achievements of the corrosion durability of anchorage structures in underground engineering are summarized and analyzed by combing literatures at home and abroad. Firstly, the necessity and urgency of research on corrosion durability of underground anchorage structures are pointed out. Secondly, the stress corrosion cracking mechanism of anchorage structures and the evaluation methods of stress corrosion are briefly described. Thirdly, the influencing factors of corrosion of underground anchorage structures are summarized, and the research status and mechanism of each influencing factor are discussed. Fourthly, the application of time-dependency analysis and reliability assessment in the study of durability of anchorage structures is introduced. Finally, based on the above analysis, the development trend of corrosion durability of underground anchorage structures is prospected in many aspects. It is pointed out that the transition from static analysis to dynamic analysis, the combination of qualitative and quantitative research, the development from single factor analysis to multi-factor analysis, the further development from macroscopic research to microcosmic research, and the evolution from deterministic analysis to probability and randomness analysis are the important directions to promote the research on corrosion durability of anchorage structures in underground engineering.